JP5397193B2 - Non-contact information medium and non-contact information medium attached booklet - Google Patents

Description

  The present invention relates to a non-contact information medium having an IC and an antenna coil, and a non-contact information medium accessory booklet to which the non-contact information medium is bonded.

  In recent years, as systems using non-contact IC cards and non-contact IC tags become widespread, for example, a non-contact IC module and an IC inlet composed of an antenna connected to the booklet such as a passport or a savings passbook are sandwiched between exterior substrates. A non-contact information medium-attached booklet has been developed, which is a contact-type information medium, in which this non-contact type information medium is attached to a cover or the like by bonding or the like and on which electronic data can be entered and printed.

  As an example of the non-contact type information medium attached booklet, a concave portion is formed by adhering a second base material having an opening of a predetermined width on the upper surface side of the first base material. An IC chip and a coil antenna connected thereto, a non-contact information medium having an adhesive layer provided on the inner surface side of the first base sheet, and the non-contact information medium is a back cover There is a booklet attached to the inner surface of a non-contact type information medium (for example, see Patent Document 1).

  In the non-contact type information medium obtained by the above-described conventional technology, an opening for providing an IC chip and a coil antenna connected to the IC chip is provided in the second base, and the first base sheet is provided. There is an increase in the processing steps such as bonding, and there are problems such as inferior flatness due to unevenness due to variations in the thickness of the opening and the IC module, as well as the accuracy of bonding of the opening and the generation of voids after bonding.

  For example, the following methods can be considered as a method for solving the problems of the unevenness and voids as described above. In other words, as in the case of credit cards and IC cards that are generally distributed, IC and antennas are sandwiched between thermoplastic substrates such as sheets of PVC, PET-G, etc., and a strong heat pressure is applied. The material is made to flow and smooth. A non-contact type information medium-attached booklet can be created by adhering the non-contact type information medium thus obtained between the front or back cover of the booklet and the inner sheet.

  Further, a porous thermoplastic base material that is thermoplastic and has voids in the base material can be used instead of a base material that flows by hot pressure. Since such a base material is obtained by foaming a resin, the material is generally soft and has low rigidity. In addition, since there is a gap in the base material, it is compatible with various adhesives, and for example, it is easy to adhere to a paper booklet. Furthermore, unevenness can be absorbed by applying an appropriate pressure.

  However, when laminating and adhering such porous thermoplastic base materials, if the high temperature and high pressure are applied to fuse them, the voids themselves will be crushed. A process such as applying a plastic adhesive is also performed.

  However, if the adhesive temperature of the thermoplastic adhesive is low, the thermal pressure required for processing may be low, but the base materials are likely to be blocked and easily peeled off in a high temperature environment. Further, if the adhesive temperature of the thermoplastic adhesive is high, there is a problem that the porous substrate is destroyed by heat applied during processing. Furthermore, such a porous base material has high air permeability and may easily allow moisture and oxygen to permeate therethrough.

Aluminum and copper are used for the antenna of the non-contact type information medium. However, these metals are easily corroded by oxygen ions or chloride ions mediated by moisture, so that the non-contact type information medium fails. May occur.

Japanese Patent Laid-Open No. 2002-4068

  The present invention solves the problems of the prior art, and the problem is that an IC inlet composed of an IC and an antenna coil connected to the IC is sandwiched between porous thermoplastic substrates. In the contact type information medium and the non-contact type information medium attached booklet in which the non-contact type information medium is bonded to the front cover or the back cover, the processing process of the non-contact type information medium is simplified, It is an object of the present invention to provide a non-contact information medium excellent in durability, water resistance, ion resistance and the like, and a non-contact information medium-attached booklet using the non-contact information medium.

As means for achieving the above object, the invention of claim 1 is directed to non-contact information in which an antenna coil and an IC connected to the antenna coil are laminated by being sandwiched between a plurality of porous thermoplastic substrates. in the recording member, set the inhibit thermoplastic adhesive layer permeation of moisture and various ions on the inner surface of the porous thermoplastic base material in contact with the antenna,
The thermoplastic adhesive layer is a layer colored with a dye or pigment so that the coating film thickness can be controlled when the adhesive layer is applied,
A non-contact type information medium characterized in that the difference between the reflection density on the surface of the porous thermoplastic substrate on which the adhesive layer is provided and the reflection density on the surface of the substrate alone is 0.04 or more. .

The invention according to claim 2 is the non-contact type information medium according to claim 1, wherein carbon black is used as a material for coloring the thermoplastic adhesive layer .

In the invention of claim 3, the thermoplastic adhesive layer comprises an ethylene-methacrylic acid copolymer resin, an ethylene-vinyl acetate copolymer resin, a polyester resin, an acrylic resin, a nylon resin, a polyamide resin, a polyurethane resin, a polyolefin resin, and 3. The non-contact type information medium according to claim 1, wherein at least one kind of the resin is used as a main component among these modified products .

The invention of claim 4 is characterized in that the thermoplastic adhesive layer is formed by applying a thermoplastic adhesive comprising an aqueous emulsion or dispersion to a porous thermoplastic substrate. It is a non-contact information medium given in any 1 paragraph.

The invention according to claim 5 is the non-contact type information medium according to any one of claims 1 to 4, wherein the thermoplastic adhesive layer has a thickness of 1 μm or more and 15 μm or less .

The invention according to claim 6 is the non-contact type information medium according to any one of claims 1 to 5, wherein an adhesive temperature of the thermoplastic adhesive layer is 70 degrees or more and 160 degrees or less .

According to a seventh aspect of the present invention, one of the porous thermoplastic base materials of the non-contact type information medium according to any one of the first to sixth aspects is bonded to the inner sheet of the booklet, and the other porous thermoplastic base material A booklet attached to a non-contact type information medium, wherein a base material is bonded to either a front or back cover member.

  According to the first and second aspects of the present invention, an antenna sheet having an IC and an antenna coil is sandwiched between and bonded to a porous thermoplastic base material coated with a thermoplastic adhesive, thereby being simple and stable. A non-contact type information medium can be created by the method.

  In addition, the porous thermoplastic base material has a drawback that it has large voids and easily allows various ions such as moisture, oxygen ions, chloride ions, and other substances to pass through. Although there is a problem that the antenna deteriorates, ethylene-methacrylic acid copolymer resin, ethylene-vinyl acetate copolymer resin, polyester resin, acrylic resin, nylon resin, polyamide resin, polyurethane resin, polyolefin resin, and modified products thereof Among them, the use of a thermoplastic adhesive layer mainly composed of at least one kind of resin suppresses the penetration of various ions such as moisture, oxygen ions mediated by moisture, and chloride ions. Corrosion of IC chips and antennas and failures due to corrosion can be prevented.

  According to the invention of claim 3, when an adhesive layer is formed by applying a thermoplastic adhesive to a porous thermoplastic base material, an environmental impact is reduced by using an aqueous emulsion or dispersion and coating is performed. Workability is also excellent and workability can be improved.

  According to the invention according to claim 4, by providing the layer so that the thickness of the thermoplastic adhesive layer on the porous thermoplastic base material is 1 μm or more and 15 μm or less, it is mediated by moisture or moisture which is a problem. Infiltration of various ions such as oxygen ions and chloride ions can be suppressed. Further, when the thickness is 15 μm or less, the thermoplastic adhesive can be prevented from protruding when the inlay is laminated.

  According to the invention of claim 5, by setting the bonding temperature of the thermoplastic adhesive to 70 degrees or more and 160 degrees or less, blocking at a low temperature, peeling at a high temperature, and porous thermoplasticity at the time of thermal lamination The destruction of the substrate can be prevented.

  According to the invention of claim 6, oversight of the missing coating of the adhesive caused by the white base material is performed by adding a dye or a pigment to the thermoplastic adhesive and coloring the adhesive to the porous thermoplastic base material. By making the difference between the reflection density of the surface on which the layer is provided and the reflection density of the surface of the substrate alone 0.04 or more, it is easy to determine whether the thermoplastic adhesive has been applied, and work efficiency and quality Can be improved.

  According to the invention of claim 7, by using a carbon black powder or dispersion, defects in appearance due to permeation and diffusion into a porous substrate that occurs when a dye-based material is used, and pigments It can be colored without causing adverse effects such as corrosion of IC modules and antennas that occur when used.

According to the invention according to claim 8, one of the porous thermoplastic substrates of the non-contact type information medium is bonded to the inner sheet of the booklet, and the other porous thermoplastic substrate is either the front or the back. By adhering to the cover member, the penetration of various ions such as moisture, oxygen ions mediated by moisture, and chloride ions can be suppressed. It is possible to prevent chip and antenna corrosion and failure due to corrosion.

1 is a perspective view for explaining an embodiment of a booklet attached to a non-contact type information medium of the present invention. It is a top view explaining embodiment of the non-contact IC inlet used for this invention. It is sectional drawing explaining embodiment which bonded the non-contact-type information medium, cloth | cross, and booklet cover of this invention.

  The non-contact type information medium attached booklet using the non-contact type information medium (10) of the present invention is (14) shaped as shown in FIG. 1, and is attached to the cover member (11) and its inner surface. A non-contact type information medium (10) is sandwiched and bonded between the pasting paper (12) and a plurality of body papers (13) are added thereto.

  The IC inlet (23) which is a part of the non-contact type information medium (10) is composed of an antenna sheet base (20), an IC chip (21) and an antenna coil (22) as shown in FIG. . For example, as shown in FIG. 3, the IC inlet (23) is sandwiched between two porous thermoplastic substrates (30) which are exterior substrates to form a non-contact type information medium (10). ing.

  The IC inlet (23) composed of the IC chip (21), the antenna coil (22), and the antenna sheet base material (20) includes the thickness of the IC itself, the thickness of the antenna, the joint of the antenna, and the antenna sheet base material. (20) Due to the thickness of the sheet itself, the sheet is uneven. When the IC inlet is sandwiched between exterior substrates and processed into a non-contact type information medium, it is desirable to eliminate these irregularities in appearance.

  As the porous thermoplastic substrate (30) used here, for example, various resins such as polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyvinyl acetate, and polyester are used alone or in combination, It can be obtained by mixing porous particles such as silica, foaming by adding air during kneading, or perforating after stretching. Such a material is generally marketed as a resin sheet or synthetic paper imparted with printability for inkjet or offset.

  By applying the thermoplastic adhesive (32) in advance to the respective inner portions of the two porous thermoplastic base materials (30) in FIG. The non-contact type information medium (10) is obtained by bonding. The thermoplastic adhesives (32) that can be used here are various types such as ethylene-vinyl acetate copolymer, ethylene-methacrylic acid copolymer, polyester, acrylic, nylon, polyamide, polyurethane, and polyolefin. Thermoplastic resins can be used.

  Among these, a resin that forms a coating film that is particularly resistant to moisture and suppresses permeation of oxygen and chloride ions, and a resin that deteriorates due to heat and humidity and does not peel off at an adhesive portion are used. In addition, from the viewpoint of the post-process and workability, coating is easy, blocking after drying is less likely to occur, and highly durable ones are suitable for use. For example, at least one of ethylene-methacrylic acid copolymer resin, ethylene-vinyl acetate copolymer resin, polyester resin, acrylic resin, nylon resin, polyamide resin, polyurethane resin, polyolefin resin, and modified products thereof Those having a main component of can obtain suitable performance by coating with a gravure coater.

  On the other hand, in general, a polyester-based adhesive may be hydrolyzed by humidity, and an ethylene-vinyl acetate copolymer-based adhesive is likely to deteriorate over time, so care must be taken. In addition, when using an aqueous heat sealant that is made into an emulsion or dispersion using the above-mentioned resin, the heat sealant itself may adversely affect the antenna or the like.

  Thermoplastic adhesive functioning as a heat sealant composed mainly of the above resin (32 is preferably between 1 μm and 15 μm as shown in claim 4. Also, adhesive performance, water resistance and ion resistance are preferred. In order to achieve both, two or more kinds of resins can be mixed or applied to two layers.

  In the invention according to claim 8, the non-contact type information medium (10) is sandwiched between the cover member (11) and the inner sheet (12) and bonded, and processed into a booklet shape. is there. The non-contact type information medium (10) is adhered to the inner paper (12) by an adhesive (33). This adhesive (33) uses a water-based emulsion adhesive from the viewpoint of workability and environment. In many cases, and in many cases, the equipment that has been used to manufacture booklets is used in practice, and therefore, an adhesive for bonding cloth and paper has been selected.

  When the non-contact type information medium (10) used for the non-contact type information medium accessory booklet (14) is prepared using an exterior substrate such as PVC or PET-G used for a general IC card, The existing paper and adhesive cannot be used to bond the internally-coated paper, and a problem arises due to the high rigidity. In order to solve such problems, in the present invention, a porous thermoplastic base material (30) is used as an exterior for a porous thermoplastic sheet, thereby exhibiting good adhesion with various types of adhesives. In addition, it is possible to create a flexible IC non-contact type information medium-attached booklet (14) having no unevenness.

  When bonding the non-contact type information medium (10) and the cover member (11), a reaction curing type adhesive (31) having no volume change can be suitably used. If a dry-curing adhesive with a volume change is used, if a part of the non-contact type information medium is recessed, the amount of adhesive used will increase, resulting in a large volume reduction during drying and for cover Since a dent is generated on the outside of the member, it becomes a problem in appearance.

  In order to solve such a problem, it is desirable to use an adhesive having no volume change. For example, a two-component mixed epoxy adhesive, a moisture-curable silicone adhesive, a one-component curable urethane adhesive, Etc. can be used. Various hot melt adhesives such as an ethylene-vinyl acetate copolymer system, an ethylene-methacrylic acid copolymer system, a polyester system, a polyamide system, a polyurethane system, and a polyolefin system can also be used. Of the above adhesives, reactive hot melt adhesives are preferred from the viewpoint of workability and durability.

  Hereinafter, the non-contact type information medium and the non-contact type information medium attached booklet according to the present invention will be described, but the present invention is not limited to this form.

  38μm polyethylene terephthalate (PET) sheet is used as antenna sheet base material (20), aluminum deposition is performed on both sides and antenna-like mask layer is printed. did. Further, the antenna coil and the jumper wire were joined by caulking, and the IC chip (21) was welded to the connection terminal portion of the antenna coil.

  The outer circumference of the antenna coil is 80 mm × 48 mm, and the inner circumference is 67 mm × 37 mm. Further, the inside of the antenna coil was removed by punching out with a size of 65 mm × 35 mm. Further, the outer periphery of the antenna coil and the outline 2 mm away from the IC were taken, and the outer antenna sheet substrate was punched and removed to obtain an IC inlet.

  A 380 μm “TESLIN sheet” (PPG Industry) was prepared as a porous thermoplastic base material, and adhesive 1 (ethylene / methacrylic acid copolymer) and adhesive 2 (shown in Table 1) on one side of this sheet ( Ethylene / vinyl acetate copolymer), adhesive 3 (polyester), adhesive 4 (acrylic), adhesive 5 (nylon), adhesive 6 (polyamide), adhesive 7 (polyurethane), adhesive 8 (polyolefin) A 10 μm-thick thermoplastic adhesive was applied and dried to prepare a sample, which was then cut into two 150 mm × 200 mm sheets.

The prepared porous thermoplastic substrate (30) and the IC inlet (23) were placed and fixed by spot heating. Further, another porous thermoplastic substrate (30) as an exterior substrate was laminated and fixed by spot heating.
The laminated sheet was sandwiched between two SUS plates and bonded by heating and pressing to obtain a non-contact type information medium (20). The heating and pressing conditions were adjusted between a heating part temperature of 100 ° C. and 160 ° C., a pressure of 450 kPa to 2250 kPa, and a processing time of 15 seconds to 120 seconds, and an optimum one was selected.

  A booklet cover cloth “Enviromate” (ICG / Holliston) was cut into a non-contact type information medium size to obtain a cover member (11). A moisture-curing hot melt adhesive (31) “Sdyne” (Sekisui Fuller) was melted with a heat roll coater and applied to the cover member (11) with a thickness of 20 g / m 2. The exterior base material side on which the IC inlet of the non-contact type information medium (10) was disposed was adhered to the cover member (11) coated with the adhesive (31), pressed with a roller, and then aged.

  A plurality of body sheets and one sheet of inner sheet (12) are collated, and the center sheet is sewn with a sewing machine to produce body sheet (13) with inner sheet (12) attached to the outermost part. The non-contact information medium (10) to which the cover member (11) is bonded is obtained as described above, and is made of a water-based emulsion on the porous thermoplastic substrate (30) side where the IC inlet (23) is not disposed. An adhesive for inner paper (33) “SP-2850” (Konishi Co., Ltd.) was applied at a thickness of 20 g / m 2 to bond the inner paper. The obtained booklet was expanded and cut into 125 mm × 180 mm to obtain a booklet attached with a non-contact type information medium.

  The evaluation results are shown in Table 1. A difference in performance was caused by the main component of the thermoplastic adhesive used in the non-contact type information medium. The thermoplastic adhesive of ethylene-vinyl acetate copolymer resin is weak in salt water resistance, so the thermoplastic adhesive layer can not block moisture and various ions and corrodes the antenna in the non-contact type information medium or polyester resin It has been confirmed that hydrolysis is accelerated and peeled off in a high temperature and high humidity environment, but the ethylene-methacrylic acid copolymer resin, acrylic resin, nylon resin, polyamide resin, polyurethane resin, polyolefin resin used this time It has been confirmed that the thermoplastic adhesive mainly composed of is resistant to antenna corrosion and deterioration in a high-temperature and high-humidity environment and is durable and suitable as a material for a booklet attached to a non-contact type information medium.

  In order to evaluate the appropriateness of the film thickness of the thermoplastic adhesive (32) in Example 1, the other conditions were the same, and the porous thermoplasticity was such that the film thickness of the adhesive 8 (polyolefin) was 1 μm, 8 μm, and 15 μm. A substrate (30) was produced.

Similarly, a booklet attached to a contact-type information medium was prepared, and the failure was confirmed, and hydrolysis was accelerated in a high-temperature and high-humidity environment, and salt corrosion resistance (5% salt spray test, 72 hours) was confirmed for antenna corrosion. . Table 2 shows the results. When the film thickness was 1 μm or less, the salt water resistance was poor, and when it was 15 μm or more, it was confirmed that the adhesive protruded when two exterior substrates were heat-laminated.

  In order to make it easy to determine whether the thermoplastic adhesive has been applied or not, 0.05% of carbon black is added to the thermoplastic adhesive (32) of Example 1 and the other conditions are the same. A detection confirmation test was performed. Fabrication of exterior base material coated with thermoplastic adhesive with 0.05% carbon black added to adhesive 8 (polyolefin) and exterior base material without carbon black added, and defect detection performance by defect inspection machine Were evaluated, and the results are shown in Table 3. By applying a thermoplastic adhesive to which carbon black was added, it was possible to detect missing coating.

(Confirmation of effect)
A non-contact type information medium with excellent barrier properties against moisture and various ions and a booklet attached to a non-contact type information medium can be produced, and it is resistant to antenna corrosion and deterioration in high-temperature and high-humidity environments, and has durability. By adding carbon black to the thermoplastic adhesive, inspection of coating omission at the time of coating can be performed easily and without any oversight of coating omission.

  The non-contact type information medium and the non-contact type information medium-attached booklet of the present invention have better barrier properties against moisture and various ions than existing base materials, and can be used for passbooks and passports that require durability.

10. Non-contact type information medium 11. Cover member 12. Internal paper 13. Text sheet 14. Non-contact type information medium booklet 20. Antenna sheet substrate 21. IC chip 22. Antenna coil 23. Inlet 30. Many Porous thermoplastic substrate (exterior substrate)
31 ... Adhesive (for cover)
32 ... Thermoplastic adhesive (for exterior base material application)
33 ・ ・ ・ Adhesive (for internal paper)

Claims (7)

In a non-contact information recording body in which an antenna coil and an IC connected to the antenna coil are sandwiched and stacked between a plurality of porous thermoplastic substrates, the inner surface of the porous thermoplastic substrate in contact with the antenna set suppressing thermoplastic adhesive layer permeation of moisture and various ions,
The thermoplastic adhesive layer is a layer colored with a dye or pigment so that the coating film thickness can be controlled when the adhesive layer is applied,
A non-contact type information medium characterized in that the difference between the reflection density on the surface of the porous thermoplastic substrate on which the adhesive layer is provided and the reflection density on the surface of the substrate alone is 0.04 or more . Noncontact information medium according to claim 1, wherein the carbon black is used as a material for coloring the thermoplastic adhesive layer. The thermoplastic adhesive layer is made of ethylene-methacrylic acid copolymer resin, ethylene-vinyl acetate copolymer resin, polyester resin, acrylic resin, nylon resin, polyamide resin, polyurethane resin, polyolefin resin, and modified products thereof. 3. The non-contact type information medium according to claim 1, wherein at least one kind of resin is a main component. The thermoplastic adhesive layer according to any one of claims 1 to 3, wherein the thermoplastic adhesive layer is formed by applying a thermoplastic adhesive comprising a water-based emulsion or dispersion to a porous thermoplastic substrate. Non-contact information medium. Noncontact information medium according to claims 1 to 4 any one, wherein the thickness of the thermoplastic adhesive layer is 1μm or more 15μm or less. Noncontact information medium according to claims 1 to 5 any one, wherein the bonding temperature of the thermoplastic adhesive layer is not more than 160 degrees 70 degrees. One of the porous thermoplastic substrates of the non-contact type information medium according to any one of claims 1 to 6 is bonded to an inner sheet of a booklet, and the other porous thermoplastic substrate is a front or back surface. A booklet attached to a non-contact type information medium, wherein the booklet is adhered to any cover member.